Terminal connector for concentric-conductor cables.



F. KRATZ & R. WAGNER.

TERMINAL CONNECTOR FOR CONCENTBIG CONDUCTOR CABLES. APPLICATION FILED MAY 1, 1913.

Y 1,079,130. Patented N0v.18,1913.

8 SHEETS-SHEET 1.

F. KRATZ n R. WAGNER.

TERMINAL CONNECTOR POR CONGENTRIG CONDUCTOR CABLES.

APPLIoATIoN FILED MAY 1. 1013.

1,079,1 30. Patented Nov. 18, 1913.

3 SHEETS-SHEET 2.

'MTN EFS" ihk/ENTE! RS um MM wz fra/z F. KRATZ & R. WAGNER. TERMINAL CONNECTOR FOR OONCENTRIC CONDUCTOR CABLES.

APPLICATION FILED MAY 1| 1913.

3 SHEETS-SHEET 3.

MTA] 55555 Inh/ENTI] Ff Patented Nov. 18, 1913.

narran srafrns Partnr onirica.

FRANZ KRATZ AND ROBERT WAGNER, OF STUTTGART, GERMANY, ASSIGNORS T0 THE vFIRM OF ROBERT BOSCH, OF STUTTGART, GERMANY. y

TERMINAL CONNECTOR FOR CONCENTRIC-CONDUCTOR CABLES.

To all whom it may concern:

Be it known that we, FRANZ KRA'rz, a subject of the Emperor of Germany, residing at and whose postbtfice address is No. 59 Schlossstrasse, Stuttgart, Germany, and Ronnn'r lrVAGNER, a subject of the Emperor' of Germany, residing at and whose postotlice address is No. 4l Seestrasse, Stuttgart, Germany, have invented certain new and useful Improvements in Terminal Connectors for Goncentric-Conductor Cables; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

rllhe present invention relates to terminal connectors for concentric conductor cables, and particularly to connectors of this kind for reliably connecting the two electrical conductors of the cable to the two terminals of a translating device, wherein there are two electrodes insulated from each other for connection to the two conductors of the cable, and two abutments insulated from each other for connection to the terminals of the translating device, a pressure applying device being employed to force the indi- Vidual electrodes into intimate electrical connection with the abutments and with the conductors to thereby establish reliable connection between the two conductors of the cable and the two terminals of the translating device.

Although our invention may be embodied in a variety of constructions, yet we prefer to construct the electrodes .in the form of split sleeves having conical bearing surfaces fitting into a conical seat in one abutment and into a conical seat of a tubular socket which is screwed into the other abutment, the conductor cable passing through the socket and the individual conductors being gripped 'by the two split sleeves.

In the accompanying drawings, illustrating several modifications within our invention of the electrodes of thecable connectors, and several modifications Within our 'invention of the a-butments, Figure 1 represents a section of one form of connector, showing the electrodes in elevation; Fig. 2 represents a similar section of another form of connector; Fig. 3 represents a central section of the electrodes of Fig. 2; Fig. 4 represents Specification of Letters Patent.

Application led May 1, 1913.

Patented Nov. 18, 1913. Serial No. 764,745.

ments, and the conductor cable comprises the inner insulated conductor 7- and the outer concentric conductor s which is shown as the outside armor or sheath of the cable.

In Fig. l, the electrode d of metal is a slotted shell with an internal bore just large enough to receive the outer sheath s of the cable and with a conical end bearing surface as shown. The electrode c of metal is insulated from the electrode Z by the insulation f, and it has a flat top and a central bore vsuitable ior passage therethrough of the in- `ner conductor f1' as shown.

Fig. 2 is similar to Fig. 1, excepting that the top of the electrode e is conical.

As shown in Fig. 3, the insulating ring f, and the insulating tube f1 insulate the electrodes d and e, while the metal sleeve n is 'forced into contact with the electrode e by turning over its top edge.

In both Figs. 1 and 2, the strands of the conductor 7' are bent over the top of the electrode e and are pressed into intimate electrical contact with the abutment 7c by screwing the socket e' into the abutment l until both electrodes are tightly seated and the electrode al squeezed tightly around the outer sheath r. The abutments lo and l5 are insulated from each other by the insulating piece t, so that the two conductors 1' and s are thereby electrically connected to the respectlve abutments 7c and Z, which may be electrically connected in any suitable way to the two terminals of a translating device.

The construction shown in Fig. lin is'sirni'- lar to that previously described, excepting that the electrode e is also slotted so as to tightly grip a solid conductor r. Furthermore, the electrode d has an upper cupped extension insulated from the electrode e by the insulating tube f, and the insulating ring f3. Also, the abutment is heldin place by insulated screws from an upper eX- tension of the abutment Z.

In Fig. 5, the parts f1, f2 and n are replaced by a single insulatingpiece f.

In Fig. 6, the insulating tube f, isseparate from the insulating ring f2, vthe advantage being that the ring f2 may then be made of stronger insulating material so that a greater pressure may be lsafely applied to the electrode. l

Figs. 7 to 14 show the terminalconnectors appliedfto a head light as an example, the incandescent lamp a having one of its terminals electrically. connected by the leaf spring c to the abutment 7c and the other terminal electrically connected vto the abutment Z through' the lamp frame. The two abutments are `lined to the lamp reliector b and are insulated from each other by the insulating pieces t. In Figs. 7 and' 8, the abutvment if: is circular in cro-ss section and is held in place byclamping pieces i'astene'd togetherby insulated screws as shown. The construction shown in Figs. 9 and 10 diier from that of Figs. 'Z and 8 in thatthe abut- V ment Zo is heldinv place in a bored recess in the abutment Z. In Figs. 1l and 12, the abutment 7:; has flat sides and is held in place byscrews lv insulated from the abutment k by insulating bushings w. Figs. 13 and 14 show the preferred form of electrodes associa'ted with the preferred arrangement of the abutments in a reiector lamp, in which the. abutment 7c is hung from an upper extension ofthe abutment Z by the 4screws o and is insulated therefrom by the insulating A pieces t and thelinsulating bushings w for tol Y what we claim is the screws. l

Having thus described our invention,

1. 'Ihe combination with a concentric conductor cable, of a terminal connector therefor comprising two conducting electrodes insulated from each other for electricalconnection to-two insulated conductors of 4the cable, two "abutments insulated 'from each other, and a conducting pressure-applying Q ductor cable, of a terminalconnector therefor comprising two conducting yelectrodes electrically connected to the l insulated conductors of the cable, two abut- Ements insulated from` each other, and a device cooperative with one o said abutments and with one of said electrodes to Aforce the other electrode into intimate contact with the other abutment and thereby electrically connect the two conductors of the cable with the respective abutments; substantially as described.

2. The combination with a concentric conductor cable, of a terminal connector thereforcomprising a conducting electrode having a split conical portion for electrical connection to the inner insulated conductor of the cable, a conducting electrodeinsulated from the other electrode and having -a split conical portion-tor electrical connection to the outer conductor of the cable, an abutment having a conical seat for the conical 'adapted to be substantia Loraine portion oi the first mentioned electrode, an

abutment insulated from the other abutment, and a conductin device coperating with the second mentioned abutment and having a seat coperating with the conical portion of the second mentioned electrode' to force the electrodes into intimate contact with the conductors and with the seats to thereby electrically connect the two conductors with the respective abutments; substantially as described.

the respective abutments; substantially as described.

. 4. 'llhe combination with a concentric confductor cable, of a terminal connector therejtor comprising two conductingfelectrodes insulated'from each other for electrical con- {nection to two insulated conductors of thegcable, two abutments insulated from each other, and a conducting pressure-applying conductors of said 5. The combination with a concentricconconducting pressure-applying device coperativ'e with one of said abutments and with 'sone of said electrodes -to force the other Qelectrode into intimate contact with the other abutment and thereby electrically connect the two conductors with the respecltive abutments, lsaid electrodes being in wsulated from each other by an insulating Amember having an opening for the passage therethroulgh of one conductor of the cable;

y as described. s t?. The combination with a concentric conpressure-applying 3. rllhe combination witha concentric conductor'cable, of a terminal connector there- :for comprising a conducting electrode for Ielectrical connection to the inner insulated '5conductor of the cable, a conducting'elec- Itrode insulated from the other electrode and .having a split conical portion for electrical gconnection to the outer conductor of the cable, an abutment having a seat for the rst ;mentioned electrode, an abutment insulated from the other abutment, and a conducting pressure-applying device 'coperating with ;the second mentioned abutment and having la seatcoperating with. the conical 1portion `.of the second mentioned electrode to force the electrodes into intimate contactfwith the y conductors and with the seats to thereby electrically connect the two conductors with device coperatlve with one of said abut-.. `fments V'and with one of` said electrodes to force the other electrode into intimate con- Qtact with the other abutment and thereby p Afelectrically connect theI two the cable with the respective abutments, pressure-applying device having a central 'opening for the passage ofthe cable there- Athrough; substantially as described.

iat

ductor cable, of a terminal connector therefor comprising two conducting electrodes insulated from each other :for electrical connection to two conductors of the cable, two abutments insulated from each other, and a conducting pressure-applying device copcrative with one of said abutments and with one of said electrodes to force theV other electrode into intimate contact with the other abutment and thereby electrically connect the two conductors with the respective abutments, one of said electrodes having a n cupped extension surrounding a part of the other electrode; substantially as described. 7. The combination with an electric head light having a reflector, of a terminal connector for connecting the conductors of a concentric cable to the terminals of a lamp comprising `two conducting electrodes insulated from each other for electrical conneet-ion to two insulated conductors of the cable, two conducting abutments mounted on the refiector and insulated from each other for electrical connection to the two terminals of the lamp, and a conductin pressure-applying device coperative wit one of said abutments and with one of said electrodes to force the electrodes into intimate contact with the conductors and into electrical connection with the abutments to thereby electrically connect the conductors with the respective terminals of the lamp; substantially as described. 8. The combination with an electric head light having a reiector, of. a terminal connector for connecting the conductors of a concentric cable to theV terminals of the lamp comprising two electrodes insulated from each other for electrical connection to two insulated conductors of the cable, a conducting'abutment mounted on the reflector for electrical connection to one terminal of the lamp, a second conducting abutment I carried by the other abutment and being in sulated therefrom yfor electrical connection tothe other terminal of the lamp, and a conducting pressure-applying device coperating withone of said abutments and with one of said electrodes to force the electrodes into intimate contact with the conductors and into electrical connection with the abutments to thereby electrically connect the conductors with the respective terminals of the lamp; substantially as described.

9. The combination with an electric head light having a refiector, of a terminal connector for connecting the conductors of a concentric cable to the terminals of the lamp comprising a conducting electrode having a split conical portion for electrical connect1on to one conductor of the cable, a conducting electrode insulated from the first and having a split conical portion for connection to the other conductor of the cable, a conductin abutment mounted on the re- Hector for e ectrical connection to one terminal of the lamp, a second conducting abutment insulated from the first abutment for electrical connection to the other terminal of the lamp and having a seat for the conical end of one electrode7 and a tubular socket having a seat for the conical end of the other electrode and being adapted to be screwed into the first mentioned abutment to force the conical portions of the electrodes into intimate contact with the conductors and with their seats to thereby electrically connect the two conductors of the cable with the respective terminals of the lamp; substantially as described.

In testimony whereof we affix our signatures, in presence of two witnesses.

FRANZ KRATZ. ROBERT WAGNER. Witnesses:

PAUL WoLFon'r, HERMANN SCHNEIDER. 

